基本解释[法学]义务性规范英汉例句双语例句Each driver has to stay under the water for 100 hours in a year. That is the obligatory norm.每名蛙人每年有100小时要呆在水下，这是他们义不容辞的任务。词组短语短语obligatory norm of criminal law 义务性刑法规范专业释义法学义务性规范